David Watson, Helen Williams “Computer Science” Hodder Education London – 2015 String - Bir necha simvollardan iborat bo’lgan STRING (satr) turidagi o’zgaruvchi yoki o’zgarmasni belgilaydi.
- Satrlar uzunligi bo’yicha belgilanadi va ular hech qanday simvolga ega bo’lmasligi mumkin.: bo’sh satr. Simvollarga harflar va / yoki sonlar va / yoki biron boshqa chop etiladigan simvollar kiradi. Masalan:
- Var TelephoneNumber = ‘44121654331’ JavaScript
- Var FirstName = ‘Emma’ JavaScript
- Var UnRepeatable = ‘@!&&@@##!’ JavaScript
- TelephoneNumber = ‘44121654331’ Python
- FirstName = ‘Emma’ Python
- UnRepeatable = ‘@!&&@@##!' Python
Mantiqiy tip - Boolean o’zgaruvchisi fakat ikkita qiymatni qabul qilishi mumkin: TRUE yoki FALSE.
- Var AgeOver21 = true JavaScript
- AgeOver21 = true Python
Real - A REAL NUMBER is a positive or negative number with a fractional part. Real numbers can be used with mathematical operators.
- Not all programming languages distinguish between real numbers and integers.
- JavaScript makes no distinction; Python does with the use of built-in functions.
- FirstInteger =
- int(25)
- sets up an integer variable with the value of 25 in
- Python
- FirstReal = float(25) sets up a real variable with the value of 25.0 in Python
Real - Haqiqiy son. Kasr qismli musbat yoki manfiy son. Haqiqiy sonlar matematik operatorlarda qo’llanilishi mumkin.
- Ba`zi dasturlash tillari haqiqiy sonlar va butun sonlar o’rtasida farqni belgilamaydi. JavaScript shu katorga kiradi; Python esa maxsus funktsiyalar orqali farqlaydi.
- FirstInteger =
- int(25) 25 qiymatga ega butun sonli o’zgaruvchini belgilaydi Python
- FirstReal = float(25) 25.0 qiymatli haqiqiy o’zgaruvchini yaratadi
Do'stlaringiz bilan baham: |
